Gas-meteb



E. S. DICKEY.

GAS METER.

APPLICATION FILED MAR. 20. 1918.

Patent-ed June 3, 1919 3 SHEETS-SHEET l.

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q GAS METER. APPLICATION FILED MAR. 20:

Patiente/d June 3,'l919.

3 SHEETS-SHEET 2 mot-2,646.

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APPLICATION FILED MAR.20, 1918. 1,305,646. Patented June 3, 1919.

' a SHEETS-SHEET 3.

ATEN i FICE EDMUND S. DICKEY, OF BALTIMORE COUNTY, MARYLAND, ASSIGNOR TOAMERIQAN METER COMPANY, ING, OF NEVET YORK, N. Y.,' A CORPORATION OFDELAWARE.

GAS-IVIETER.

Application med March 20, 1918.

Ta aZZ whom it may concern.-

Be it known that I, EDMUND S. DICKEY, a citizen of the United States,residing in the county of Baltimore and State of Maryland, have inventedcertain new and useful Improvements in Gas-Meters, of which thefollowing is a specification.

This invention relates to improvements in dry type gas meters, and moi-eparticularly to the valve construction of such meters.

In the present style of meters of two valve construction, the tendencyhas been to'increase the size of the valves with the object of securingthe greatest possible valve area for the quick intake and discharge ofgas, for the purpose of increasing the meter capacity, that is to say,increasing the number of Cubic feet of gas passed by the meter n a giventime. Obviously this increase in the size of the valve has itslimitations, and be comes practically prohibitive, for various reasonsin connection with present form of valve construction.

It is my purpose primarily, bv these improvements, to provide fonrvalves n two valve units, that is to say, two single valves, each formedinto a double valve, and constituting a single valve unit, whereby Iobtain the marked advantage of getting a valve area n a singlemeterequivalent to four valves in a meter, thus obviously enabling themeter to quickly take and discharge gas with corresponding increase inthe capaclty of the meter.

The construction is such that the valves can be conveniently positionedon the valve table and connected by suitable channels and adapted toserve two diaphragms in a single meter, and by other channelconnections, serve or control four diaphragms in one meter. j

In meters for which the valve construction about to be described isespecially dej signed, there is a central partition in the meter casing,dividing it into diaphragm compartments, usually one diaphragm in'eachcompartment, and the valve units, according to my construction, arelocated one on each side of the partition, and may be adapted, bysuitable channel connections, as

just stated, to serve or control either one diaphragm in eachcompartments, or two in each compartment, as the case may be.

The angle of mounting the valves upon the valve table, in myimprovements, does net Speciication of Letters Patent.

' Patented June 3, 1919.

Serial No. 223577.

differ from that of mounting the valves in the ordinary two valve style,and in both instances, the valves are mounted at 90 for reciprocalaction in coordination with the diaphragms on each side of the meterpartition, which manner of mounting is to prevent the rotary partsof'the meter from at any time being on dead center.

Another object of my invention is to provide a valve in which, orthrough which, double valve area is obtained, with the use of butonecrank and one valve arm, and this without increase in the valve Stroke,or length of travel of the valve.

Another object of the invention is to so construct the valve and valveseat, that double the valve area is obtained with the consequentadvantages of quick intake and discharge of gas, and correspondingincrease in meter capacity, with only approximately one-half increase infriction of the valve in its reciprocation, over two separate singlevalves now commonly employed in two valve meter construction-a veryimportant consideration when it is realized that the elimination offriction reduces the resistance of the meter resulting inincreasedcapacity of the meter, under a given loss of pressure n operation. Inthe construction wherein I greatly reduce friction, in proportion to thevalve area, there is incident a reduction in the number-"of valvesurfaces of the valve seat, thus reducing the number of grindingsurfaces between the seat and the valve, which reduces the liability ofthe so-called cutting action on the valve faces, due to the slid-ingmotion of the valve.

A very important eonsiderationin valve construction, particularly n theconstruction of valves for large meters, is the tendency of thesevalves'to warp or otherwise become distorted, thus destroying theperfect fit which is required between the surfaces of the valves and thevalve seats, with the connecessity for the use of double or triplecranks on the valve operating shaft for effectng multi-valve movement.

A still further object is to provide accurate guiding means for thevalve on its seat, and to so construct the guides that they' will beself-cleaning and kept free from the gumin-ing or sticking efects whichwould otherwise result from the gas condensates or heavy oils. V v

In the accompanying drawings, there is shown only enough of the metercasing, Valve table and channels to show the relatve position of thevalvesto these parts, the invention disclosed n this application, asbefore stated, residing more particularly in the valve construction, andit will be understood that suitable channels may be provided below thevalve table and n communication with the various ports in the valveseat, so that the valves may be adapted for supplying, under the controlof a single valve arm for each valve, either two diaphragms located onein each diaphragm compartment, or two diaphragins in each compartment.

Figure 1 is a top plan view of a meter with the top plate removed andthe valve housing broken away to show the position of the valves on thevalve table.

Fig. 2' is a cross section of one of the valves shown n Fig. 1, taken online a-a, showing the valve n position on its seat, whereincommunication is established between a diaphragm channel and the outletchannel, and between the space above the valve table and the casing, ordiaphragm compartment, below the casing, the wrist pin n this view,being shown on the front flange of the valve;

Fig. 3 is a longitudinal section taken on line b-b of one of the valvesshown n Fig. 1, showing the manner of supporting and guiding the valveon the valve seat.

Fig. 4 is a top plan view of a valve seat.

Fig. 5 is a cross section of a valve shown n Fig. 1,'the position beingthat n which the communication between the diaphragm and outlet, andbetween the casing or a diaphragm compartment and outlet, is cut off,the wrist pin n this form, being shown located centrally n the domeportion of the valve.

Fig. 6 is a similar view of one of the valves shown in Fig. 1, slightlymodified n the particular that the wrist pin for connection with theValve operating arm, is shown on the rear flange or ledge of the valve,the position of the valve in this form being such that communicationbetween the space above the valve table and a diaphragm, and the spacebetween the meter casin and the outlet, is established.

Re erring to the drawings, the numeral 1 designates the meter casing,which may be,

in all essential respects, like meter-casings n common use, except n theparticular of external dimensions, which I am able to greatly reduce,relatve to the meter capacity, by reason of the novel construction andarrangement, the meter casng being substantially of the same dimensionsas the ordinary meter casing, with the exception of slight increase inthe comparatively unimportant dimension of depth. The numeral 2designates the back and 8 the front of the casing, and 4: the sides,which sides are provided with the usual intake connection 5, and outletconnection 6.

The numeral 7 designates the valve table and 8 the flagstas, extendingthrough the table from the bottom of the meter, not further illustratedin this application, and it need only be said here that these staifs areconnected by suitable flags to daphragms below'the table, and aredesigned to carry the usual arms linked to the valve operating shaft 9,which, in'this instance, is provided with a single crank 10, to whichare connected the valve arms 11, which are n turn connected in the formshown in Figs. 1' and 2, to wrist pins 12, on the valves.

Each valve and its seat, is identical with the other, and consequently adetail description of one will serve as a description of the other. Thenumeral 13 designates the valve, oblongand generally rectangular nshape, and formed with a dome portion 14, and front and rear flanges 15and 16, the fianges serving, n the reciprocation of the valve, to coverand uncover the diaphragm and casing ports 17 and 18, respectively inthe valve seat 19, to alternately establish communication between thediaphragm channels 17" and outlet channel 18' and between the metercasing or diaphragm compartments, and the outlet, through the outletport 20 n the valve seat, which port 20, as shown n Fgs. 2 and 6, isnever entirely closed, there being shown in these gures two oppositeextreme positions of the valve on its seat.

The valve seat is formed with two parallel side bars 21, front and rearbars 22, and two intermediate bars 28, and a central transverse bar 24,forming between them the diaphragm port 17, the outlet port 20, and thecasing port 18. The side bars 21, and bar 24 are extended beyond thebars 22, and the upper surfaces of all of the described bars aresmoothly ground to form suitable bearing surfaces for the valve, and thesurfaces are all in the same plane. The side bars 21 forin hearings forthe lower edge 25 of' the sides of the valve, and I provide the domeportion of the valve with a central rib 26, which has a bearing upon.the bar 24, which rib 26 divides the valve into two compartments 27 and28, and the bar 24 divides the Valve seat.

In the form of valves illustrated, I use n a single meter, two valves 7and" fonr diaphragms with suitable channel connec tions, which is in agiven unit, equivalent to four valves in capacity for control of the gasinto and out of the meter. In the arrangement just indicated, channelsare provided connecting with the diaphragm ports and outlet ports of avalve on one side of the partition, and with corresponding ports of theother valve on the other side of the partition.

In adapting the valves for control of two diaphragms, one on each sideof the partition, I arrange the channels to servetwo diaphragms andtheir compartments, in-' stead of four diaphragms and theircompartments, it being understood, of course, that the How of gas intoand out of the diaphragms and their compartments is controlled throughthe valves.

Having thus fully described my invention, what I claim is 1. In a gasmeter, n combination, a valve seat whose dimension transverse to thedirection of the line of travel of the valve on the seat, is greatly 'inexcess of its length, and having diaphragm, casing, and outlet ports,coextensive with said dimension, whereby greatly increased valvecapacity is obtained and a valve on said seat, and means for operatingthe same.

2. In a gas meter, n combination, a valve seat, whose dimensiontransverse to the direction of the movement of the valve on said seat isgreatly in excess of its length, and having diaphragm, casing and outletports, coextensive with said dimension, whereby increased valve capacityis obtained, and a valve adapted to slide on said seat, a valveoperating shaft, and connections between the valve and operating shaft.

3. In a gas meter, in combination, a meter casing having a partitiontherein dividing it into diaphragm compartments, a valve seat on eachside of said partition, each of said valve seats having the dimensiontransversely of the line of travel of the valve on the seat, greatly nexcess of its length, and having diaphragm, casing and outlet ports,coextensive with said dimension, whereby increased valve capacity isobtained, and a valve itted to slide on each seat, an operating shafthaving a single crank and connections between the crank and the valves.

- 4. In a gas meter, in combination, an ob: long valve seat having sidebearing bars and a central bearing bar, and diaphragm, casing, andoutlet ports, and a valve on said seat having side portions bearing onthe side bars and an intermediate rib designed to bear and travel on thecentral bar.

5. In a gas meter, in combination, a valve seat, a valve table, guiderails located at opposite sides of the valve seat, and separatedtherefrom and mounted on th'e valve table, a valve adapted to slide onthe valve seat and having brackets coperating with the guides, wherebythe valve is guided on its seat.

6. In a gas meter, in combination, a valve seat, a valve table, a guiderail located at each side of the seat and separated therefrom andmounted on the valve table and provided with a laterally extending upperportion, a valve designed to travel onthe valve seat and provided oneach side with an angle bracket having a portion underlying the upperportion of the guide rail, whereby the valve is guided on the seat.

In testimony whereof I aiix my signature in presence of two witnesses.

EDMUND S. DICKEY.

Witnesses:

FRANK Gr. BRERETON, TITIAN W. JoHNsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, ZD. C.

